CN108729975B - Tool joint for testing engine oil pressure of rocker shaft - Google Patents
Tool joint for testing engine oil pressure of rocker shaft Download PDFInfo
- Publication number
- CN108729975B CN108729975B CN201810859749.XA CN201810859749A CN108729975B CN 108729975 B CN108729975 B CN 108729975B CN 201810859749 A CN201810859749 A CN 201810859749A CN 108729975 B CN108729975 B CN 108729975B
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- Prior art keywords
- oil
- rocker arm
- arm shaft
- pressure
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
Abstract
The invention discloses a test tool joint for the oil pressure of a rocker shaft, which is used for testing the oil pressure of the rocker shaft and comprises: the connecting part is used for connecting the test tool joint with the rocker shaft, and the connecting part is of a hollow structure; a connection bent pipe which is communicated with the connection part, and the end part of the connection bent pipe is bent upwards; and a general pressure probe provided at an end of the connection elbow, the general pressure probe being for connection with the pressure test hose, the connection portion, the connection elbow, and the general pressure probe being constructed as an integral structure. The test tool joint can conveniently test the engine oil pressure at the rocker shaft, so that the engine oil pressure information of the rocker shaft is fed back in time, the actual lubrication condition of the valve train is accurately fed back, and the convenience and the reliability of test development are guaranteed.
Description
Technical Field
The invention relates to the field of engines, in particular to a tool joint for testing the oil pressure of a rocker arm shaft.
Background
The valve actuating mechanism is one of the important components of the engine, and the movement of the valve actuating mechanism has the characteristics of high speed, complexity, severe working conditions and the like, so that the engine oil is particularly important for lubricating the engine. Parts such as engine rocker arms and valves need to be lubricated during working, and lubricating oil enters the inner cavity of the rocker arm shaft through the oil duct and then reaches parts needing to be lubricated through the rocker arm shaft, the rocker arm bushing and the oil injection holes in the rocker arms. However, the prior art has difficulty in testing the oil pressure at the rocker shaft, which is undoubtedly disadvantageous to design and development, cannot feed back the oil pressure information of the mechanism in time, cannot feed back the actual lubrication condition of the valve train, has adverse effects on the whole design and development and verification, and is not beneficial to fault discovery and elimination.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a tool joint for testing the oil pressure of a rocker shaft, which can conveniently test the oil pressure of the rocker shaft.
In order to achieve the above object, the present invention provides a tool joint for testing oil pressure of a rocker shaft, the tool joint comprising: the connecting part is used for connecting the test tool joint with the rocker shaft, and the connecting part is of a hollow structure; a connection bent pipe which is communicated with the connection part, and the end part of the connection bent pipe is bent upwards; and a general pressure probe provided at an end of the connection elbow, the general pressure probe being for connection with the pressure test hose, the connection portion, the connection elbow, and the general pressure probe being constructed as an integral structure.
In a preferred embodiment, the first end of the universal pressure probe is provided with an external thread, the second end of the universal pressure probe is provided with a bulge structure, and the pressure test hose is sleeved on the bulge structure.
In a preferred embodiment, the test tool joint further comprises an anti-disengaging structure, wherein an inner wall of the anti-disengaging structure is provided with an internal thread, and the internal thread is used for being connected with the external thread of the first end part, so that the pressure test hose is fixedly connected with the universal pressure measuring head.
In a preferred embodiment, the thickness of the connecting portion is greater than the diameter of the connecting bend, and the wall thickness of the connecting portion is 2 mm.
In a preferred embodiment, the angle between the upwardly curved portion of the connecting bend and the horizontal is less than 45 °.
In a preferred embodiment, the rocker arm shaft is constructed in a way that a cylinder head oil channel is directly communicated with the rocker arm shaft through a bolt hole, a first bolt hole is formed in the cylinder head, a through oil channel hole is formed in the rocker arm shaft, a second bolt hole is formed in the rocker arm shaft seat, and the rocker arm shaft seat is fixedly connected with the first bolt hole through the hollow structure of the connecting part, the through oil channel hole and the second bolt hole respectively through oil bolts.
In a preferred embodiment, the bore diameter of the rocker shaft oil passage hole is larger than the diameter of the oil passing bolt, so that oil can pass from the oil passage hole to the rocker arm.
In a preferred embodiment, the inner diameter of the hollow structure is larger than the diameter of the oil passing bolt.
Compared with the prior art, the tool joint for testing the oil pressure of the rocker shaft comprises the following components: under the condition that the original structures of an oil duct of the cylinder cover and the rocker arm shaft are not required to be changed, the engine oil pressure at the rocker arm shaft can be conveniently tested, so that the engine oil pressure information of the rocker arm shaft is fed back in time, the actual lubrication condition of the valve actuating mechanism is accurately fed back, and the convenience and the reliability of test development are guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a test tool joint according to an embodiment of the present invention.
FIG. 2 is an assembly schematic of a tool joint for testing oil pressure of a rocker shaft according to an embodiment of the invention.
FIG. 3 is a schematic illustration of oiling a rocker arm shaft according to an embodiment of the present invention.
Description of the main reference numerals:
the device comprises a connecting part 1, a connecting bent pipe 2, a general pressure measuring head 3, a first end part 31, a second end part 32, a convex structure 33, a cylinder cover 4, a rocker arm shaft seat 5, a rocker arm shaft 6 and an oil passing bolt 7.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, a test tool joint for rocker arm shaft oil pressure according to a preferred embodiment of the present invention is used for a rocker arm shaft oil pressure test, wherein a rocker arm shaft is configured such that a cylinder head oil passage is directly communicated through a rocker arm shaft through a bolt hole, the test tool joint comprising: connecting portion 1, connecting bend 2 and general pressure gauge head 3.
Wherein, connecting portion 1 is used for being connected test fixture connects with the rocking arm axle, and connecting portion 1 is hollow structure. The connecting bend 2 is in communication with the connecting portion 1, the end of the connecting bend 2 being bent upwards, the connecting bend 2 being a transition pipe which should be as short as possible and reduce abrupt cross-sections. A universal pressure probe 3 is arranged at the end of the connecting bend 2, the universal pressure probe 3 is used for connecting with a pressure test hose, and the connecting part 1, the connecting bend 2 and the universal pressure probe 3 are constructed as an integral structure.
In the above solution, the first end 31 of the universal pressure probe 3 is provided with an external thread, the second end 32 of the universal pressure probe is provided with a protruding structure 33, and the pressure testing hose is sleeved on the protruding structure 33 of the second end 32. It should be noted that in order to ensure the versatility of the test equipment, the specification of the universal pressure probe 3 is consistent with that of a conventional test pressure pipe joint. Preferably, the thickness of the connecting portion 1 is greater than the diameter of the connecting elbow 2, the wall thickness of the connecting portion 1 being 2 mm. The connection elbow is required to be in smooth transition in the transition region of the bending angle, the included angle between the upward bending part of the connection elbow and the horizontal direction is smaller than 45 degrees, the arrangement is that a hole is punched at a proper position on the cylinder cover to extend out after the pressure testing hose is connected to the general pressure measuring head 3, and meanwhile, the connection of the pressure testing hose can be ensured to be straight.
In a preferred embodiment, the test tool joint further comprises an anti-disengaging structure, wherein an inner wall of the anti-disengaging structure is provided with an internal thread, and the internal thread is used for being connected with the external thread of the first end part, so that the pressure test hose is fixedly connected with the general pressure measuring head, and the pressure test hose is prevented from being disengaged from the general pressure measuring head.
As shown in fig. 2, the valve train includes a cylinder head 4, a rocker shaft seat 5 and a rocker shaft 6, wherein the cylinder head 4 is provided with a first bolt hole, the rocker shaft 6 is provided with a through oil passage hole, the rocker shaft seat 5 is provided with a second bolt hole, and an oil bolt 7 respectively penetrates through the hollow structure of the connecting part 1, the through oil passage hole, the second bolt hole and the first bolt hole to be fixedly connected. The oil duct is from cylinder head 4 to rocking arm shaft 6 through first bolt hole, and the oil duct hole that leads to in rocking arm shaft 6 carries engine oil to the rocking arm in each position on, and the bore diameter on the rocking arm shaft is greater than the diameter of through oil bolt, and its aim at makes engine oil can lead to on the rocking arm from this oil duct hole to can test the engine oil pressure of rocking arm shaft department under the state that need not to change its original structure, establish the guarantee to convenience and the reliability of experimental development. The oil on the rocker shaft is schematically shown in fig. 3.
The mounting mode is that the thickness of the connecting part 1 of the test tool joint is the value that the used oil passing bolt is slightly longer than the original bolt, and the thickness of the connecting part 1 is larger than the diameter of the connecting bent pipe 2, so that the test tool joint is mounted on the rocker shaft, and the direction of the test tool joint is determined according to the mounting convenience and the motion is not influenced. After the test tool joint is fixed, the moment is tightened, the pressure test hose is connected to the second end of the universal pressure measuring head 3, a hole is drilled at a proper position on the cylinder cover to extend out of the pressure pipe, sealing is carried out, and installation is completed.
In a preferred embodiment, the inner diameter of the hollow structure is larger than the diameter of the oil passing bolt 7. The connecting part 1 of the test tool joint is made of 35# steel, has good plasticity and proper strength, and has good processing performance. Connection elbow 2 may use Q235, which is connected to connection portion 1 by means of welding.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (1)
1. The fixture joint for testing the engine oil pressure of the rocker arm shaft is characterized in that the fixture joint for testing the engine oil pressure of the rocker arm shaft is composed of a connecting part (1), a connecting elbow (2) and a universal pressure measuring head (3), a gas distribution mechanism comprises a cylinder cover (4), a rocker arm shaft seat (5) and a rocker arm shaft (6), wherein a first bolt hole is formed in the cylinder cover (4), a through oil channel hole is formed in the rocker arm shaft (6), a second bolt hole is formed in the rocker arm shaft seat (5), and an oil bolt (7) respectively penetrates through a hollow structure of the connecting part (1), the through oil channel hole and the second bolt hole to be fixedly connected with the first bolt hole; the oil duct is arranged from the cylinder cover (4) to the rocker arm shaft (6) through the first bolt hole, oil is conveyed to the rocker arms at all positions through the oil duct hole in the rocker arm shaft (6), the diameter of the hole in the rocker arm shaft is larger than the diameter of the oil bolt, so that the oil can pass through the oil duct hole to the rocker arms, and the pressure of the oil at the rocker arm shaft can be tested without changing the original structure of the rocker arm shaft;
the valve train is mounted in a manner that the value that the oil passing bolt is longer than the original bolt is the thickness of the connecting part (1) of the test tool joint, and the thickness of the connecting part (1) is larger than the diameter of the connecting bent pipe (2), so that the test tool joint is mounted on the rocker shaft, the direction of the test tool joint is determined according to the convenience in mounting and the motion is not influenced, after the test tool joint is fixed, a moment is tightened, a pressure test hose is connected to the second end part of the universal pressure measuring head (3), a hole is punched from the proper position on the cylinder cover and extends out of the pressure pipe, and then the pressure pipe is sealed, and the mounting is finished;
this test fixture connects and is used for the test of rocking arm axle machine oil pressure, specifically, test fixture connects and includes:
the connecting part is used for connecting the test tool joint with the rocker shaft, and the connecting part is of a hollow structure;
a connection bent pipe which is communicated with the connection portion, and an end portion of the connection bent pipe is bent upward; and
a universal pressure probe provided at an end of the connection elbow, the universal pressure probe being for connection with a pressure test hose, the connection portion, the connection elbow, and the universal pressure probe being constructed as an integral structure; the first end part of the universal pressure measuring head is provided with an external thread, the second end part of the universal pressure measuring head is provided with a bulge structure, and the pressure testing hose is sleeved on the bulge structure;
the test tool joint further comprises an anti-falling structure, wherein an inner thread is arranged on the inner wall of the anti-falling structure and is used for being connected with the outer thread of the first end part, so that the pressure test hose is fixedly connected with the universal pressure measuring head;
the thickness of the connecting part is larger than the diameter of the connecting bent pipe, and the wall thickness of the connecting part is 2 mm;
the included angle between the upward bending part of the connecting bent pipe and the horizontal direction is less than 45 degrees;
the rocker arm shaft is constructed in a manner that an oil duct of a cylinder cover is directly communicated with the rocker arm shaft through a bolt hole, a first bolt hole is formed in the cylinder cover, a through oil channel hole is formed in the rocker arm shaft, a second bolt hole is formed in the rocker arm shaft seat, and oil bolts respectively penetrate through the hollow structure of the connecting part, the through oil channel hole and the second bolt hole to be fixedly connected with the first bolt hole;
the diameter of the oil passage hole of the rocker arm shaft is larger than that of the oil passing bolt, so that engine oil can pass from the oil passage hole to the rocker arm;
the inner diameter of the hollow structure is larger than the diameter of the oil passing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859749.XA CN108729975B (en) | 2018-08-01 | 2018-08-01 | Tool joint for testing engine oil pressure of rocker shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859749.XA CN108729975B (en) | 2018-08-01 | 2018-08-01 | Tool joint for testing engine oil pressure of rocker shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108729975A CN108729975A (en) | 2018-11-02 |
| CN108729975B true CN108729975B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810859749.XA Active CN108729975B (en) | 2018-08-01 | 2018-08-01 | Tool joint for testing engine oil pressure of rocker shaft |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979980B (en) * | 2010-10-20 | 2012-01-25 | 北京航天计量测试技术研究所 | Sinusoidal pressure generation chamber with filter characteristics |
| CN102478443A (en) * | 2010-11-26 | 2012-05-30 | 中国北车集团大连机车车辆有限公司 | Measurement filter for fuel pressure of diesel engine |
| CN202092835U (en) * | 2011-06-15 | 2011-12-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Pressure testing device |
| CN202599595U (en) * | 2012-05-23 | 2012-12-12 | 襄阳金民晟机械制造有限公司 | Fuel pressure meter adapter |
| CN203098042U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | Oil inlet pipe body of booster |
| CN203745136U (en) * | 2013-12-23 | 2014-07-30 | 重庆布莱迪仪器仪表有限公司 | Test fast-assembling joint |
| CN204154436U (en) * | 2014-09-05 | 2015-02-11 | 重庆长安铃木汽车有限公司 | Automobile test device for pressure measurement in crankshaft room |
| CN205477941U (en) * | 2016-02-22 | 2016-08-17 | 北京福田康明斯发动机有限公司 | A test fixture and engine fuel pressure test equipment for fluid pipeline |
| CN206246225U (en) * | 2016-12-13 | 2017-06-13 | 宁波福士汽车部件有限公司 | Twin turbo-charger oil inlet pipe |
| CN206756378U (en) * | 2016-12-15 | 2017-12-15 | 上海悟力仪表电器有限公司 | Quick test pressure meter apparatus |
| CN206378248U (en) * | 2016-12-15 | 2017-08-04 | 中国第一汽车股份有限公司 | A kind of pressure gauge zero-bit point inspection device |
| CN208749431U (en) * | 2018-08-01 | 2019-04-16 | 广西玉柴机器股份有限公司 | Rocker arm shaft engine oil pressure test fixture connector |
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2018
- 2018-08-01 CN CN201810859749.XA patent/CN108729975B/en active Active
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| CN108729975A (en) | 2018-11-02 |
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